Unique Selling Point：Dual AAA battery power supplying and moblie phone style body Solution: Sigmatel（3506） Description : Color display with 65k pixels OLED and changeable casing Video playback with PTA format; Audio playback with MP3/WMA/WAV format 8 EQ including USER MODE Voice recorder Built-in FM tuner Line-in recording with WAV/MP3 format USB 2.0 full speed Ebook browsing with TXT file Photo browsing with JPEG/BMP format 2xAAA battery Plug & play for windows Me or above MEMORY Quantity: 128MB/256MB/512MB/1GB